export function getToday(){
    var date = new Date();
    var year = date.getFullYear(); //年
    var month = date.getMonth() + 1; //月；因为month属性从0开始所以要加1
    var day = date.getDate(); //天
    var week = date.getDay(); //周
    var hour = date.getHours(); //小时
    var minute = date.getMinutes(); //分钟
    var second = date.getSeconds(); //秒
    return year + "-" + month + "-" + day;
  }